JEN'S HEARTBREAK! JUSTIN IS ENGAGED

Jennifer Aniston always kept the door open to a reunion with Justin Theroux-but Nicole Brydon Bloom has taken him off the market!

It's official! On Aug. 28, Nicole Brydon Bloom revealed that she was engaged to beau Justin Theroux by showing up to the Venice International Film Festival premiere of his latest flick, Beetlejuice Beetlejuice, with a 4-carat emerald-cut diamond on that finger. The custom ring boasts a platinum and yellow gold band that shone as brightly as the couples' smiles in Italy.

But as Justin, 53, and Nicole, 30, begin a new chapter, Jennifer Aniston saw the door firmly close on her past. While she and the Leftovers star announced their split in 2018 following just three years of marriage, "the fact that they remained friends gave Jen hope that they could possibly reconcile someday. So it stung to hear that Justin has moved on once and for all and gotten engaged," dishes a source.